And maybe some salt: Scientists propose simple fix for world crisis
(NEWSER) - One in 6 people in the world faces a clean-water shortage, according to the United Nations—so scientists are proposing a quick fix. Dirty water can be rendered drinkable using a few odd ingredients: Sun, salt, dirt, and lime, NPR reports. The sun's rays can kill the germs in bottled water left out for six hours—but for this to work, the water has to be transparent. "You need to be able to read a newspaper through it. That means it's clear enough for the UV radiation to penetrate and kill the pathogens," says an expert. More»